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Your new Carrier carbon monoxide alarm is a sophisticated electronic
device – yet very simple to understand. Basically, the unit will display
a “0” if it senses 30 PPM of CO or less and if you have a good backup
battery pack installed.
If it senses carbon monoxide, it will display a reading so you can see
if you have a non-threatening or emergency situation.
However, if the backup battery pack is low or missing, or if the unit
malfunctions, it will display other readings (and alarm differently) to
alert you that something is wrong with the alarm.
Please familiarize yourself and other family members to the difference
between a CO reading and a reading signifying a problem with the
alarm itself.
AC and DC Start Up, Alarm and Error Operation
Display Readings
Brief “888”
and flashing
dot.
One short
“chirp”.
Self testing on
start-up.
Normal opera-
tion at start-up
or reset.
Steady display
of number
between 30
and 999.
4 quick
beeps, 5
seconds off,
repeating.
Carbon monoxide
detected.
Unit in alarm
condition.
Steady “Err”
and flashing
dot.
“Chirp” every
30 seconds.
Unit is not
operational–will
not detect CO.
Unit malfunction.
None–unit will
quickly display
a zero.
Refer to page
23, What to do
if alarm sounds.
Contact customer
service at
1-800-880-6788.
No display. Constant alarm. Unit is not
operational–will
not detect CO.
Unit malfunction.
Contact customer
service at
1-800-880-6788.
26
Display Shows Alarm Sound Unit Status Unit Condition Recommended
Action